水底的鱼 2012-09-04 15:28 IP:保定
寻求合作,以对硝基苄溴和三氮唑为起始原料合成苯甲酸利扎曲普坦,达到我方所供质量标准及内控成本。   [更多]
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06070013 2012-09-06 09:09 IP:三门峡
求购黄芩苷生产工艺,收率要求12%以上,费用详谈。   [更多]
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huli808 2012-09-11 11:19 IP:长春
 本人需要左氧针剂灭菌温度变更补充申请资料,如果有的人请与我联系。   [更多]
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ljh99445772 2012-07-03 17:05 IP:周口
  求邻氯苯基环戊酮的合成技术或者合作生产,我有销路,   [更多]
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changxin 2012-09-27 11:01 IP:重庆
这项任务要要求设计一个自动化的,高通量的仪器 , 可以定量地和可重复地测定的油水乳化液的分离。 这个任务需要提交一份书面建议书。 An Instrument for Quantitative, Reproducible Characterization of Water/Oil Emulsions AWARD: $30,000 USD | DEADLINE: 10/15/12 | ACTIVE SOLVERS: 508 | POSTED: 8/15/12 Source: InnoCentive Challenge ID: 9933086 Type: Theoretical-IP Transfer Detailed Description & Requirements The presence of emulsions in oil operations is common and generally undesirable. Crude oil emulsions typically form due to the presence of naturally occurring emulsifying agents (asphaltenes, resins, etc.) in crude oil. The high cost associated with transportation and corrosion of equipment is one of the problems caused by the presence of water in the crude oil. Therefore, oil dehydration is required, which is often achieved through chemical treatment using demulsifiers. While the Seeker has identified ~200 liquid “demulsifier” agents, compounds that in amounts of ~100-500 ppm can aid in the resolution of the water and oil phases, they lack a quantitative and reproducible assay for determining demulsifier effectiveness at resolving the emulsion. Currently, the Seeker performs a “bottle test” in which they add ~15-100 mL of the emulsion into a bottle, add the different demulsifiers, shake, and then visually observe which bottles show the best phase separation. This assay clearly relies on visual detection by a trained observer and is not nearly as quantitative or reproducible as the Seeker desires. Results from a bottle test with the same emulsion and three different demulsifiers are shown below. The bottle on the left has clearly not been resolved into two distinct phases. While the middle bottle shows significant improvement, careful inspection of the phase boundary shows a slight amount of oil contaminating the water layer and a slightly undefined interface. Finally, the bottle on the right shows an optimally resolved two-phase system with a very clear oil/water phase boundary. Important Note:   [更多]
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changxin 2012-09-26 21:59 IP:重庆
任务材料需要提供与化合物相匹配的核心结构和每种化合物合成的详细的参考依据。合格者会得到一定的奖励。将给予每种化合物知识产权转让费9000元,非独家许可使用化合物,以达到研究目的,比如:研究化合物分子的性质和分子衍生物。 Seeking Bicyclic Aminoketones AWARD: varies | DEADLINE: 10/22/12 | ACTIVE SOLVERS: 24 | POSTED: 9/21/12 Source: InnoCentive Challenge ID: 9932910 Type: RTP Detailed Description & Requirements Intellectual Property: In return for the Initial Transfer Fee of $1,500 per compound, you are expected to grant the Seeker only a non-exclusive license to use your compound for internal, research purposes (for example, researching the molecule’s properties or preparing derivatives of the molecule). Material supply of non-commercial compounds matching the shown core structures is desired. For Solvers’ information, procedures for preparing compounds of this type may be found in the following references: Synthesis, 1, 1979, 50. Synthesis, 3, 2010, 493. Tetrahedron, 68 (4), 2012, 1286. J. Organic Chem, 73 (6), 2008, 2114. J. Med. Chem, 37 (18), 1994, 2831. More specifically, the Seeker is looking for compounds that meet the following Requirements: Structure: FeatureRange StructureA bicyclic aminoketone as shown in the structures above. Elements in R and A groupsR = H, Me, or protecting group (preferably Boc) A = A 1-3 membered linker where one atom may be N, O, or S Substituents– In addition to H, the core rings and/or the A linker may be substituted with Me or F. Unsaturation– The core rings and/or the A linker may include an olefin, including an exo olefin, but may not contain any additional carbonyl groups. Additional Rings– The Seeker would prefer compounds that have only the bicyclic structure shown above, however, they may consider compounds with an additional ring fused to the core bicycle. Stereochemistry– The Seeker will only consider compounds which are single diastereomers. In cases where the compound may exist as two enantiomers, the Seeker will consider   [更多]
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taideng 2012-09-13 17:56 IP:重庆
寻依折麦布杂质结构式(订金已支付给药智网,请踊跃投标) 要求提供依折麦布中杂质中的结构式,要求不得有缺漏及错误,具体代码及类别如下: 联系QQ:1667479459   [更多]
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changxin 2012-10-12 15:38 IP:重庆
最近在美国,天然气的可用性范围大大提高。这将潜在的影响天然气转化成化学物质的进程,比如目前来自原油的烯烃和芳烃。这个任务就是需要找到使天然气转换成主要的化学和化工原料的新方法。 这是一个思维方法的挑战,保证至少会奖励一名合格者。 应征稿件请直接上传网址:https://www.innocentive.com Natural Gas Conversion to Chemicals TAGS: Engineering/Design, Chemistry, Physical Sciences, Ideation AWARD: $15,000 USD | DEADLINE: 10/28/12 | ACTIVE SOLVERS: 126 | POSTED: 9/28/12 Recent developments show a large increase in Natural Gas (NG) availability in the US. This leads to the potential for processes to convert NG to chemicals that are currently derived from crude oil such as olefins and aromatics. The Seeker is looking for novel ideas for methods to convert Natural Gas to a major chemical or chemical feedstock beyond those processes known today. This is an Ideation Challenge with a guaranteed award for at least one submitted solution. Detailed Description & Requirements Background Recent developments show a large increase in Natural Gas (NG) availability in the US; novel production methods to extract NG from shale reservoirs have reversed forecasts from the US becoming a net gas importing to a net gas exporting country. On the demand side, gas utilization is favored because it has the lowest CO2 emissions /energy ratio. At the same time, crude oil availability (as simply observed from its price) has been limited. In general, the gas-oil differential has been widening in the recent past and there are reasons to believe this broad gap will be continued well into the future. This outlook offers interesting potential for processes to convert NG to products that are currently derived from crude oil, e.g. (liquid) transportation fuels and chemical feedstock as olefins and aromatics. Some processes already exist, for example: Gas-To-Liquids, GTL, process converting NG via synthesis gas intermediate (a mixture with varying ratios of hydrogen and carbon monoxide, often containing carbon dioxide as well) to paraffinic products using Fischer-Tropsch   [更多]
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tianyinwozai 2012-10-11 09:28 IP:济南
求购磷酸肌酸钠精制工艺, 标准为1g溶于10g水中,无杂质,具体要求见附件   [更多]
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gonggong 2012-09-17 09:05 IP:重庆
茄尼醇纯品为白色粉末或蜡状固体,通常含有少量杂质而呈淡黄色。茄尼醇易溶于乙醚、丙酮、烃类等有机溶剂而不溶于水,其对紫外光呈非选择性吸收,无旋光性。其熔点较低,为32-33℃ 。茄尼醇是一种重要的医药中间体,是泛醌类药物中间体不可替代的成分,是合成维生素K的侧链和辅酶Q10以及合成抗溃疡药物、抗癌药物不可替代的天然原料。我公司目前对市场进行调研, 95%以上茄尼醇需求较大。正着手准备从烟草中提取茄尼醇的实验,开展高纯度茄尼醇分离纯化研究。 要求:茄尼醇分离纯化工艺达到中试水平,含量达到95%以上,成本控制在2500元/kg以下。质量符合企业内控标准。 合作方式:技术合作或者技术转让等方式解决 重庆恒星生物技术有限责任公司   [更多]
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